Means for forming plastic columns



April 29, Y1930.

E. B. DowD MEANS FOR FORMLNG PLASTIC COLUMNS' Filed July 5l. 1926 2 Sheets-Sheet l April 29, 1930. E. B. Down 1,756,541

MEANS FOR-FORMING PLASTIC COLUMNS Filed July 31. 1926 2 Sheets-Shea?l 2 Ag R 1 LI-MEE 1:15' v Edmund BemaraQDoM/ct Patented Apr. 29, 1930 ListiniA EDMUND BERNARD DOWD, E CHCAGO, ILLITSVV MEANS FOR FORMIEG PLASTIC COLUMNS Application led July 31,

This invention relates to means for forming plastic material about a steel structure to provide a composite column, although certain features thereof be employed with equal advantage for other purposes.

It contemplates more especially the provision of standard units of any suitable form which bear. a relation to each other to facilitate the assembly thereof so as to produce with ease, a mold or lagging of any desirable size and design Which may be readily dismantled and repeatedly used Without impairing their utility.

Numerous types of molds haveheretofore been proposed for use especially in forming reinforced concrete or other` plastically formed columns, but these have not proven entirely satisfactory in that they must necessarily be specially constructed for each individual column Which is not only laborious and expensive, but also renders them of little value after the column has set, it being necessary that they be partially or Wholly` destroyed in order to effect the removalV thereof.

Further, the lagging must be properly cerf.. tered about the particular beam or steel strucl ture to be reinforced, and to accomplish this end novel means are provided which are detachably associated With the lagging so as to permit the removal of the latter Without disturbing the former Which may be retained Within the plastic material to reinforce the structure. v

One object of the present invention is to improve and simplify the construction of devices of the type mentioned.

Another object is to provide standard units which bear a relation to each other to facili.- tate repeated assembling and dismantling of 4G the related units Without impairing ytheir utility.

Afurther object is to provide improved unitary means for spacing and reinforcing the lagging, thereby rendering the vlatter cax pable of withstanding appreciable stresses prevalent prior to the setting of the material contained therein.

A still further obj ect isto provide reinforcing means capable of a'ssociation'and disasseciation With the lagging so that vthe latter 19%'. Serial No. 126,144.

may be removed independently of the Vreinforcing means. i

Other objects and advantages will appear from the following'description of an illus-1 trated embodiment of the present invention.

ln the drawings:

Figure 1 is a vien7 inelevation showing a lagging embodying features of the present invention@ Figure 2 is a sectional View talen substantially along the line -Il of Figure 1.

Figure 3 is a fragmentary sectionalvieiv.

taken substantially alongline Ill-lll of l Figure 9 is a sectional View taken'rsubstantially along line IX IX of Figure 3.

Figure 10 is a sectional view of a modified column Which is formed of plastic material having a central steel structure Within a hol-1 low interior.

The means selected for illustration is7 in this instance, shown associated Withan 1- beam 10 of standard construction, which is disposed in-avertical position to constitute the skeleton of a column formed vof plastic' material to be hereinafter described.

ln order to properly form the plastic material about the steel structure or core, in tais `instance the I-beam l0, suitable lagging must be provided to retain the plastic material in position prior to and during the setting thereof. n the present. embodiment, tlielagging `comprises a tubular member 11 preferably constructed of sheet material, which is longitudinally sectioned to define, in thisv instance, corner sections 12 and intermediate sections 13 complementary .to the corner or end sections to define a' tubular member to serve leg ' corner sections 12 terminate 1n reinforced as a. mold for the plastic material poured therein. It is to be noted that the sections 12 v and 13 may be of any desirable he'ight,sand

length by placing the constituent unitsV 14,.

15, 16, et cetera, in superposed aligned axial relation to make possible the formation of a column of any desired length. As shown, the

ends 17 which are beaded or otherwise bent upon itself to rigidify the longitudinal edges thereof so that the corner sections will not be deformed or in any way defaced due to Ythe roughiusage and handling towhich they are subjected.

VTo enable a ready and convenient positieni-ng of the lagging 11 about the steel structure, in this instance the vI-beam 10, spacing strips 18 are provided, which when oined as will later appear herein from bands adapted to embrace the beam 10 andto detachably engage the lagging 11 which, in this instance,

constitutes the sections 12 and 13, so as to Amaintain the latter in spaced relation to the beam as well as to serve as a reinforcing meansto -assist the lagging in withstanding the stresses created thereon by the. plastic material placed therein.V

In view of the fact that it may be necessary or at least highly desirable to use steel structures of various sizes asis quite common in building construction, itis advantageous to render the spacing strips 18. adjustable soas to adjustably embrace the I-beam 10 or other inner structures -of varying sizes.

The adjustable feature, in this instance, consists vin providing overlapping adjacent strips 18 which terminate in confronting hooks or loops 19 to receive therein 'a spacer 20, in this instance of sheet material preferably having'inclined sides slidable within the loops 19 to cause strips 18 *to-.embrace the I-beam 10 by a wedging action 'createdby the plate 20, as will be obvious from the showing in Figure 2. Vrlo retain the strips in their adjusted position, a clip 21 preferably of sheet material bentabout itself, is slidable on the overlapping ends of the strips 18 to resiliently embrace the latter, thereby maintaining them in the desired adju stment.

In the construction shown the strips 18 intersect each other at the corners of the I-beam lO where they are provided with interlitting slits 22 to prevent relative movement therebetween. The projecting ends of the bands 18 terminate in and constitute angularly related members 23 which have af portion, in this instanceanupper half or tongue 24, of their extremities projectingthrough appropriate slots 25 provided in the end sections 12. The extremities 24 are suitably apertured as at 26'` to receiveV a pinV 27 which lretains the end section 12'against movement with respect to the spacing bands formed from the strips 18. The other half portions 28 of the projections 23 of the strips 18, are bent to define, invthis instance, a triangle` with the angular related projecting portions 23 so as to properly sustain the bands Vwithin the lagging with a View of reinforcing the latter which are subjected to excessive stresses during the pouring o f the plastic material therein.

vThe facet that thelagging may be ofV various designs and sizes makes it essential or at Y least highly desirable, to adj ustably unite the ',able apertures provided in the 'cooperating extensions 29 and 30, vThus itf will be appar- Vbent ends 28 which are pro-vided with coment that the spacing strips 18 may be readily l' Y adjusted to properly and rigidly center the lagging with respect to the steel structure, in this instance the I-beam 10, as well as beV readily suspended withinthe-lagging in detachable relation thereto so that lthe corner sections 12 may be removed independent of the spacing strip 18 by merely removing Vthe pins 27 from their apertures 26provided in the exteriorily projecting extremities 2tlofy thestrips 18.

in order to render the lagging rigid so that it may withstand excessive stresses withoutbeing flexed, a plurality of spacing bands formed from strips 18 are provided at irregular spaced intervals along the length of the lagging, the spacing near the bottom thereof being much less and gradually becoming greater as will be apparent from the showing in Figure 1, to correspond With the stresses on the lagging whichV proportionally increase along the length thereof.A Y

To retain the intermediate sections 13 in ytheir related position with respect to theend sections 12, transverse cords, in this instance4` the angle bars 32, are disposedl intermediate the portions 23 of the strips 18, they being provided with reduced extremities 33 which are adapted to project in' suitable slots 34 provided in the portions 23 yof the strips 18. A pin 35 is projected through a suitable aperture in the extremity 33, to maintain the bars 32 in a position adjacent the intermediate members 13. The bars 32 are detachably secured to the intermediate section 13 of they lagging 11 by means of the lugs 36 which are bent from sheet metal to delinea triangular portion embracing the .angle bar 32 at spaced 4three, provided at spaced intervals along the width as well as over the length of the sec- `tions 13. l The lugs 36 are retained in position Cil irzaeiaai by means of -an vexteriorly :located pin 38 which projects through appropriate aligned apertures provided vin fthe confronting projections '37. f

With the arrangement of parts thus v-iar described, it willbeiapparentitliatthe sections lfand ilconstitutinglagging may be freadily positioned `relative to `each Aother fand maintained yin 4their assembled relation by Lmeans oithc spacing strips =l8iandsthe bars 32 Whi ch are so 'correlated that the'lagging may be removed vindependent of the `means retaining them ^in position, Ithe latter remaining inthe plastic material to reinforce the same. itis to be iiicted that the projection 37 of the clips 36 'maybe either-employedsffor securing any appropriate surface, such. as brick or the like, vto fthe :column Vformed aiter the plastic material has been poured :in the usual :Wa-y, orthey `inaybe removed bycliiseling orother- Wise shearing them ofi. :In vsome instances it may be desirableto gfprovidevstruts, in this instance, 4the crossed Wires! 39 which arese cured Ato the #spacing :strips 18 andthe bars 32 :reinforce the :plastic material between the -bands and the interior surface of the lagging' y Y l/Vherever hollow columns are desirable, the steel structure, in lthis instance Ithe `I-beain 10'-, :may :be provided with plates 40 (FigureY 10,) 4to enclose the I-.beamso that 'thematerial poured between-the lagging 11V and the plates 39 twill ipresenuafter setting ;a reinforced column having a hollowinterior. 'Otherwise'the ccnstructionand simulation oithe'component parts is similar to vthatldiscussedabove. c

will be apparent from the above, that means-:constituting standard units, rhave Vbeen provided Whichgmay be lassembled with ease and repeatedly used fto construct `plastically prepared'columns -oi' any desirable shape or design Without :necessitating the provision ci new lagging for each individual job.

I am aware that many changes may be madepand `numerous details of construction may be varied through a Wide rangewithout ilepartin-g `from kthe lprinciples of this invention, and il 'therefore do :not-,purpose limiting the patentfgranted hereon, otherwise Vth an necessitated :by the gpriorfart. Y.

fI claim as my invention:

l. v.l/leans' for forming plastic materialabout `an;inner structure rto lprovide a lcomposite column, including` sectional/lagging constituting a-tubularfsheet metal lagging,

centering means spaced along :the length oi and within said lagging, said centering'means projecting' throughlsaidlagging, andsecuri-'ng means associated `with the projecting portions of said `centering means to maintainsaid'sed tions in assembled relation, said sections ibeing removable independent 'of Saidcentering means. t

2; The combination With sectional lagging defining a. tubular ymember yhaving spaced slots iin the lWalls zthere'o, @of `spacing :strips Within .said zmem'ber and projecting ithrough l j and spacer strips for centering` said lagging.

aboutfsaid structure, ithe intersecting'extrem'ities oft said spacer strips being @relatively ad-V justable, and meansassociated With saidspacer strip Yi-ezrtre'mitics to adjusted position.

4. VMeans for formi-ng 'plastic :material maintain them in about an y,inner-structiire to provide ya comeY posite column, including;sectionaljlaggingoiv sheet l'material having :spaced slots rtherein, and spacing-strips :Within said lag-'ging and projecting through Vsaid Slots, -saidspaci-ng strips de ning an adjustable centralportion to :embrace saidisteel structure.

5. Means `for 'forming :plastic materialabout aan inner :structure `to provide a: composite column, lincluding `sectional :lagging-1ct sheet material having :spaced slotsftherein, spacing strips Within fsaidflaggling and proj ecting fthroughfsaidfslots, said spacing strips deiiiing an adjustable central portionto einbrace ,said inner :structure,.;and meansy i-or maintaining ysaid strips `in Lad] usted position.

6. Means for formi-ng #plastic ,materiah about an inner structure `:to :provides-compos.

site column, including sectional flagging oi sheet material fhaving spaced slots therein,

spacing strips Y Within gsaid Vlagging. and proj j ecting through said-slotsnsaidfspacing strips defining an .4i-adjustable centra'il :portion-5to :em- Y brace Ysaid inner structure, :and means tor.

maintaining said strips inV ladjusted zposition, said means comprising confronting `loops Lon'v said spacingstrips,fand api-ate islidably -associated with said :loops Y i 7. Means for iorming; plastic material about an inner :structure itc profvide a compo;-

si-te column, includ-ing sectional ,-lagging ,ot sheet material having spaced slots therein,`

lil() spacing strips `Within:said lagging and pro-V Y jectingv through said slotsi,said spacing-strips defining adjustable .centra-l portion to ein brace said inner structure,A means lfoiumaintaining-said strips `in,adj-usted position, said means comprising confronting loops :on v:said spacing strips, a plate slidabl-y associated with said loops, fand :a clip associated with said stripsabout said loops.

v8. Means for uforming plastic material about inner structurant@ provifdeza com posite column, including sectienal lagging having Lslots :in fthe Walls lthereof, spacing' str-ips adjustably associated with lsaid estruc iso ture and engaging the slots in said lagging.

said lstrips having apertu-red'extremities, and pins projecting through.- said fapertiires.

9. Means tor forming plastic y-inate'rfial aboutan' inner structure tor :provide a composite column, including'sectional lagging.

of'sheet'mater'ial, spacing bands adjustable to embrace said inner structure, saidfspacing .bands having projections engageablewith said lagging, and means detachably associatedWith said sections intermediate said projections to maintain said sections in assembled relation. 1 f lo Means .for forming plastic .material about an inner structure. to Vprovide a composite column,Y including sectional Ylagging ofislieetmaterial, spacing bands adjustable to embrace said inner structure, said spacing V bands having projections! engageable with said lagging, and means detacliably associated with said sections intermediate saidV proj ections to maintainV saidl sections in assembled relation, said sections'beiiig removable independent of rsaid spacing-bands andintermediate means.Y i l. l M i `11. Means for' Vformingplastic lmaterial about an inner structure to provide-a c ompositeicoluinn, including lagging comprising cornersections,intermediate sections complemental to said corner sections, spacing bands to embrace said inner structuresaid spacing bands having projections engageable `with said corner sections, angular ymembers dis- Vposedv intermediate said Yprojections adjacent said intermediate sections,and clips for detachably securing saidv angularV members to said adjacentfsections. Y if v '12." Means for'foiming vplastic material about an inner structure to .provide a coinposite column, in cluding'lagging comprising Y corner sections, `intermediate sections complementalfto said Vcorner sections, spacing bands to embrace saidiiniier' structure said spacing bands having projections'engageable With vsaid corner sections, V'angular members disposed intermediate said projections adjacent said intermediate sections, clips for de# tachably 'securing said.l angular members to saidl adjacent sections,`a`nd Vstruts tensioned between said bands andintermediate menibers. Y A I i -13. Means vfor y forming plastic* material about aninner structure to provide a. composite column, including lagging comprising coriiersections, intermediate sections comple-` inentalito'said corner sections, spacing Vbands Y to A'embrace said innerstructu're said spacing' bandszhaving projections engageable with said''corner sections, angular members disposed intermediate said projections adjacent saidintermediate sections, clips for detachablysecuring said 'angular' members to said adjacent sections, said Vclips projecting throughthe lagging, and securing means associated Withsaid clips externally of said lagging'.` Y l 14. Means for foiniingiI plastic material about an inner struct-ure to provide a conipositecolumn, including sectional lagging,

means embracing said inner structure and*V engageable with saidV lagging to. maintain the'latter in spacedrelation, and securing means associated With said means vexternallyv Y of said' lagging. v Y

15. Meansv for forming plastic material its outer ends to provide an upper and aY lower portion, one of said portions extending through said lagging, the other of said portions being angularly bent to abut a cornei section and to connect with a corresponding portion on another of said strips, and adjustable means for connecting said angular portions.

17. As an article of manufacture, an element inteiengageable With similar elements to iorm reinforcing means, said element comprising astrip split adjacent an end thereof,

the. portion of said strip on'one side of said split projecting as a tongue, and the portionon the other side of said split being formed to define a channel member.

18. In combination, reinforcing means embracing a core, said means comprising `a plurality of elements interengageable adjacent corresponding ends thereof, complemental` pairs of said elements termina-ting lin confronting hook-likeV portions permitting a vWedge-lilas member to be placed therebetween to tighten said elements about said core, and

lagging supported by saidv elements around' said core.

v Y ,19. In combination, reinforcing means for a plastic column and the like formed around a core, said means comprising a'plurality' of elements, veach element vbeing adjustably interengageable With a plurality of similar elementsfor forming bands to embrace said core, and lagging engageable and supported by said bands. Y i i Y 2O.` Means for forming plastic material about an inner core, including transversely sectional lagging, and adjustable spacingV means for embracing said core and engageable with said lagging to support the saine around saidv core in spaced relationship thereto. f

21. Means for forming `plastic material about an inner core, including side and corner sections of lagging, and means mountable Within said lagging for' centering the same iif with respect to said core and for engaging said. lagging to support the same around said core in spaced relationship thereto, said lagging being removable from said means Without injury to said plastic material to leave a casting havingl a periphery of said plastic material.

22. Means for forming plastic material, including a plurality of like elements adjustably interengageable With each other to form a band, and sectional lagging removably engageahle With and around said band to be supported thereby, said band remaining within said plastic material as reinforcing means when said lagging is removed.

In testimony whereof I have hereunto subscribed my name.

EDMUND B. DOWD. 

